exricamtm(1) General Commands Manual exricamtm(1)NAME
exricamtm - performs tone mapping on an OpenEXR image (iCAM)
SYNOPSIS
exricamtm input.exr blur.exr output.exr
DESCRIPTION
Performs the non-linear response compression portion of the iCAM tone mapping algorithm described in this paper:
G.M. Johnson and M.D. Fairchild. Rendering HDR Images. IS&T/SID 11th Color Imaging Conference. 36-41 (2003)
The input image should be normalized, and the whitepoint image should be at the same scale factor as the input image. The output image
should be normalized before viewing.
AUTHORS
Billy Biggs <vektor@dumbterm.net>.
SEE ALSO exrtools(1).
exrtools 0.4 December 2003 exricamtm(1)
Check Out this Related Man Page
exrpptm(1) General Commands Manual exrpptm(1)NAME
exrpptm - performs tone mapping on an OpenEXR image (photoreceptor)
SYNOPSIS
exrpptm [options] input.exr output.exr
DESCRIPTION
Performs the tone mapping function described in this paper:
Erik Reinhard and Kate Devlin. Dynamic Range Reduction Inspired by Photoreceptor Physiology. IEEE Transactions on Visualization and Com-
puter Graphics (2004).
The input image should be normalized, and the output file returned by this function should also be normalized before viewing.
OPTIONS -f Controls the intensity of the resulting image. Valid range is from -8 to 8, defaulting to 0.
-m Controls the contrast of the resulting image. Valid range is from 0.3 to 1.0. The default value of 0 uses an algorithm to calcu-
late an appropriate m factor for the image based on its luminance.
-c Amount of chromatic adaptation to apply to the image. Valid range is from 0 meaning no chromatic adaptation to 1 meaning fully
adapted. Defaults to 0.
-a Controls the light adaptation. Valid range is from 0 meaning that the adaptation is global to 1 meaning that the adaptation is
based on pixel intensity. Defaults to 1, to trade detail visibility for contrast.
AUTHORS
Billy Biggs <vektor@dumbterm.net>.
SEE ALSO exrtools(1).
exrtools 0.4 December 2003 exrpptm(1)
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